10TH CLASS BIOLOGY-CHLOROPLAST
10TH CLASS BIOLOGY-CHLOROPLAST
The green coloured plastids are called chloroplasts. They trap solar energy and participate in photosynthesis. Each chloroplast is a membraneous structure, consisting of 3 membranes. The third layer forms stacked sac like structures called grana. The intermediary fluid filled colourless portion is called as stroma. Chloroplast has substances which capture sunlight. They are called photosynthetic pigments. Chlorophyll is a photosynthetic pigment. It contains one atom of magnesium. Two major kinds of chlorophylls are associated with thylakoid membranes.
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